Home / 21,038.67-29,035.10-12,087.90

Finding the Fourth Proportional to 21,038.67, 29,035.10 and 12,087.90

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Solution

The fourth proportional to 21,038.67, 29,035.10 and 12,087.90 is: 16,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.67 : 29,035.10 = 12,087.90 : x
  2. Step 2: Convert to fraction form
    21,038.67/29,035.10 = 12,087.90/x
  3. Step 3: Cross multiply
    21,038.67x = 29,035.10 × 12,087.90
  4. Step 4: Simplify right side
    21,038.67x = 350,973,324.85
  5. Step 5: Solve for x
    x = 350,973,324.85/21,038.67
  6. Step 6: Final answer
    x = 16,682.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.